This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on both baseboard and add-in card PCB designs. This includes interconnects between PCI Express devices located on the same baseboard (chip-to-chip routing) and interconnects between a PCI Express device located “down” on the baseboard and a device located “up” on an add-in card attached through a connector. This document is intended to cover all major components of the physical interconnect including design guidelines for the PCB traces, vias and AC coupling capacitors, as well as add-in card edge-finger and connector considerations. The intent of the guidelines and examples is to help ensure that good high-speed signal design practices are used and that the timing/jitter and loss/attenuation budgets can also be met from end-to-end across the PCI Express interconnect. However, while general physical guidelines and suggestions are given, they may not necessarily guarantee adequate performance of the interconnect for all layouts and implementations. Therefore, designers should consider modeling and simulation of the interconnect in order to ensure compliance to all applicable specifications. The document is composed of two main sections. The first section provides an overview of general topology and interconnect guidelines. The second section concentrates on physical layout constraints where bulleted items at the beginning of a topic highlight important constraints, while the narrative that follows offers additional insight.
上传时间： 2014-01-24
上传用户：s363994250
Giga Crime Fighting Mecha Gelato-Bots: The Supreme Icecream-Tron Revolution 8,000,000. A top-down adventure game with three themes; mecha, anime and icecream. This project hopes to evolve with action/rpg/multiplayer elements like classic console games.
标签： Icecream-Tron Gelato-Bots Revolution 000
上传时间： 2013-12-18
上传用户：D&L37
一个用LISP语言编写的语法分析器。使用Bottom-up Chart Parsing算法，程序非常的简单高效，只有二百多行。另外可以自己定义文法和字典。 源代码公开，主要供对语法分析算法和LISP编程感兴趣的人学习使用，也可以使用在自然语言处理的各种实际研究当中。
标签： Bottom-up Parsing Chart LISP
上传时间： 2014-01-19
上传用户：refent
This Unix C code monitors a web server every few minutes by trying to retrieve its home page. It sends you email when it can t connect, and every so often while the server is still down. It sends a final message when it comes back up. If you have email paging, just direct the email to your pager address.
标签： monitors retrieve minutes server
上传时间： 2015-01-11
上传用户：pompey
dsp&c51的编程,从小百合上down的
上传时间： 2015-01-12
上传用户：洛木卓
Boosts Browsing Speeds Up To 3,000 Times Faster.zip
标签： Browsing Boosts Speeds Faster
上传时间： 2015-01-15
上传用户：fxf126@126.com
Setting up an ADOCE project using Visual C++ 6.0 is rather simple. Assuming that you have downloaded and installed the ADOCE SDK from Microsoft, you are ready to use it in your Windows CE Database applications. The sample that I have provided is a *very* simple one illustrating how to instantiate the proper COM objects, and the basics of how to interface with them (in a very simple example)
标签： downloaded Assuming Setting project
上传时间： 2015-01-16
上传用户：阳光少年2016
snmp up 2
上传时间： 2015-01-24
上传用户：独孤求源
snmp up 8
上传时间： 2013-12-28
上传用户：gaojiao1999
snmp up 9
上传时间： 2014-01-19
上传用户：mpquest
